Roll Out the Green Carpet

The Oscar statuette may glimmer with gold, but this year's nominees are looking pretty green. Tinseltown treehugger Leonardo DiCaprio is up for a best actor award for his role in Blood Diamond, a socially conscious flick that netted five nominations. Top nominees Penelope Cruz, Forest Whittaker, and Ryan Gosling will join DiCaprio in arriving at the ceremony in eco-friendly vehicles, and Al Gore's global warming call-to-arms, An Inconvenient Truth, is nominated for best documentary (and best original song). Get ready for tonight's main event by listening to Sierra Club Radio's interview with Truth director Davis Guggenheim.